Did a Kilonova Set Off in Our Galactic Backyard 3.5 Myr ago?

Leonardo Chiesa, Albino Perego, Federico Maria Guercilena

The recent detection of the live isotopes ${}^{60}\mathrm{Fe}$ and ${}^{244}\mathrm{Pu}$ in deep ocean sediments dating back to the past 3-4 Myr poses a serious challenge to the identificati…